As low-energy electrons penetrate closer to the Earth they develop an anisotropic distribution which becomes unstable, excites electromagnetic waves, and accelerates electrons via gyro-resonant ...

These studies analyze how electromagnetic waves scatter from layered media ... Additionally, the scattering characteristics of anisotropic rough interfaces have been investigated.

(Unlike electromagnetic waves, gravitational waves have no dipole ... the waves have a gravitational "memory" component due to anisotropic matter motion and aspherical emission of neutrinos.